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S-8813 Datasheet(PDF) 2 Page - Seiko Instruments Inc

Part # S-8813
Description  3-CHANNEL WHITE LED DRIVER IC (CHARGE PUMP IC WITH BUILT-IN CONSTANT-CURRENT CIRCUIT)
PDF  29 Pages
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Manufacturer  SII [Seiko Instruments Inc]
Direct Link  http://www.sii.co.jp
Logo SII - Seiko Instruments Inc

S-8813 Datasheet(HTML) 2 Page - Seiko Instruments Inc

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3-CHANNEL WHITE LED DRIVER IC (CHARGE PUMP IC WITH BUILT-IN CONSTANT-CURRENT CIRCUIT)
S-8813 Series
Rev.2.1_00
2
Seiko Instruments Inc.
Block Diagrams
1. S-881300CPE
PFM
control
oscillator
(600 kHz)
ON/OFF
circuit
VIN
C
+
C
−
IOUT1
IOUT2
IOUT3
GND
CPOUT
RISET
Soft
Start
circuit
Switch
control
circuit
−
+
Reference
voltage
CPUMP=0.22 μF
COUT=10 μF
R1
*1
Rs
Rf
SW 1
SW 2
SW 3
SW 4
–
+
ON/OFF
CIN=4.7 μF
2. S-881300BPE
PFM
control
oscillator
(600 kHz)
ON/OFF
circuit
VIN
C
+
C
−
IOUT1
IOUT2
IOUT3
GND
CPOUT
VISET
Soft
Start
circuit
Switch
control
circuit
−
+
Reference
voltage
CPUMP=0.22 μF
COUT=10 μF
R2
*2
Rs
Rf
SW 1
SW 2
SW 3
SW 4
+
−
ON/OFF
CIN=4.7 μF
*1. Current setting resistance
*2. Internal resistance
Figure 1 Block Diagram



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